Pronunciation : Em`bou`chure" Part of Speech : n. Etymology : [F., fr. emboucher to put to the mouth; pref. em- (L. in) + bouche the mouth. Cf. Embouge, Debouch.] Definition : 1. The mouth of a river; also, the mouth of a cannon.
2. (Mus.) (a) The mouthpiece of a wind instrument. (b) The shaping of the lips to the mouthpiece; as, a flute player has a good embouchure. Source : Webster's Unabridged Dictionary, 1913